Home / 3,118.16-4,675.08-1,385.84

Finding the Fourth Proportional to 3,118.16, 4,675.08 and 1,385.84

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Solution

The fourth proportional to 3,118.16, 4,675.08 and 1,385.84 is: 2,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.16 : 4,675.08 = 1,385.84 : x
  2. Step 2: Convert to fraction form
    3,118.16/4,675.08 = 1,385.84/x
  3. Step 3: Cross multiply
    3,118.16x = 4,675.08 × 1,385.84
  4. Step 4: Simplify right side
    3,118.16x = 6,478,912.87
  5. Step 5: Solve for x
    x = 6,478,912.87/3,118.16
  6. Step 6: Final answer
    x = 2,077.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.